pm awhotrods. he is a guru when it comes to the ford 6.0 td. I know they are notorious for having egr problems. be careful it doesn't start leaking coolant into the motor. We had a buddy hydro lock his motor when the egr went out on his 6.0 ford td. my advice would be contact awhotrods considereing he has had his since it was new and has pretty worked out all the bugs over the last 7 or so years.
